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Playstation - Shadow Struggle cheats

Unlock Hagane as playable character:
Finish the game in hard mode without using a single continues. 
After that, go to the player selection screen and move past Niel or Kei. 
Hagane may be saved to a memory card.

Unlock Marry P. or Berserker as playable character:
Finisht the game with Hagane without using a single continues in 
hard mode.After that, go to the player selection screen and move past 
Niel or Kei. You can save the boss characters to your memory card.